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EMI Suppression of 10 Gbit/s Optical Transceiver by Using EBG Structure

机译：利用EBG结构抑制10 Gbit / s光收发器的EMI

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摘要

The fiber optic data transmission system plays an important role in broadband communication. According to the market trend, data traffic is significantly increasing and larger throughput of communication systems is required. Many electro-optical conversion devices (so called optical transceivers) are used in the system. Because of that, the electromagnetic noise radiation becomes a serious issue. Although the noise level is proportional to the number of transceivers, a qualitative relationship between the number of transceivers and emission level is not clear. Furthermore, since there's no general design guideline to suppress electro-magnetic interference (EMI), it is difficult to solve this problem once it emerges. In these circumstances, recent dispersion control technology, such as Electro-magnetic Band Gap (EBG), is a potential solution for this problem. In this paper, the methods of how to predict the total emission level with the superimposed effect of hundreds of transceivers and how to determine the EMI suppression design target are described. Then, the method of how to reach the targeted noise level with a newly introduced shielding scheme is explained. Finally, the result of an in-house prototype test is summarized, which proves the verification of the EBG structure by utilizing FEM/FDTD simulation.
机译：光纤数据传输系统在宽带通信中起着重要作用。根据市场趋势，数据业务量显着增加，并且需要更大的通信系统吞吐量。系统中使用了许多电光转换设备（所谓的光收发器）。因此，电磁噪声辐射成为一个严重的问题。尽管噪声电平与收发器的数量成正比，但不清楚收发器的数量与发射电平之间的定性关系。此外，由于没有抑制电磁干扰（EMI）的通用设计指南，因此一旦出现此问题就很难解决。在这些情况下，最新的色散控制技术（例如电磁带隙（EBG））可能是解决此问题的方法。本文介绍了如何在数百个收发器的叠加作用下预测总发射电平的方法以及如何确定EMI抑制设计目标的方法。然后，说明了如何通过新引入的屏蔽方案达到目标噪声水平的方法。最后，总结了内部原型测试的结果，这证明了利用FEM / FDTD仿真对EBG结构的验证。

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